Lower administrative burden
Project documentation, evidence, and communication live in one place instead of scattered across email threads and file versions.
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The verification record
Built on a platform, not spreadsheets.
Every validation and verification runs through one secure, collaborative workspace for project developers and auditors alike — replacing the spreadsheets and email chains most verification still runs on.
The platform runs the same seven-stage process behind every discipline. See all disciplines →
Verification record
- 01Pre-engagement
- 02Engagement
- 03Planning
- 04Verification execution
- 05Independent review
- 06Decision & issuance
- 07Post-issuance monitoring
Why a platform
What changes when verification goes digital
Traditional verification is often slow and expensive enough that it pushes project developers — particularly across the Global South — away from independent assurance altogether. We built our platform to make verification real-time, data-driven, and affordable enough that cost stops being the reason to skip it.
Legacy VVB process
- Manual, paper-based evidence collection
- Slow, costly engagements that price out smaller developers
- Static, point-in-time opinions
- One-size-fits-all process regardless of project type
Sustainext
- Real-time, data-driven verification
- Technology-led efficiency built for accessibility, including in the Global South
- Trust data infrastructure, built to integrate with registries
- Workflows tailored to project type and risk profile
Increased accuracy & transparency
Every review, comment, and decision is logged against the record it relates to — not lost in a separate inbox.
Real-time updates on project progress
Developers and auditors see the same status at the same time, instead of waiting on a status-update email.
At a glance
Explore the seven stages
Click or hover a stage to preview it, then open the full detail below.
01
Pre-engagement of activities
→
02
Engagement
→
03
Planning
→
04
Validation / verification execution
→
05
Review process
→
06
Decision & issuance
→
07
Post-issuance monitoring
→
Stage 01
Pre-engagement of activities
Inquiry, application, and initial contract review before any formal engagement begins.
We confirm scope, standard, and eligibility before either party commits time to a full engagement.
Inquiry review
Scope confirmation
Eligibility check
Fee estimate
View full details ↓
01
Pre-engagement of activities
Stage 01Before any formal engagement begins, we review the inquiry, confirm the project or organisation is eligible for the standard and discipline in question, and check the initial scope against what the client actually needs verified.
This stage exists to catch mismatches early — the wrong methodology, an ineligible project type, or a scope that doesn't match the client's actual reporting need — before either side commits time to a full engagement.
Typically involves
Inquiry review
Scope confirmation
Eligibility check
Fee estimate
What happens
- Initial inquiry and application review
- Eligibility check against the relevant standard
- Indicative scope and fee estimate
What you provide
- Project or organisation overview
- Intended standard and methodology
- Target timeline for verification
02
Engagement
Stage 02Once scope is confirmed, we enter into a formal engagement contract and nominate the verification team for the project. Team nomination isn't a formality — every nominated auditor is checked against independence requirements before being assigned.
This is also where the assurance level (for GHG or ESG assurance work) or the applicable methodology version (for project verification) gets fixed in writing, so there's no ambiguity later about what standard the opinion is being issued against.
Typically involves
Contract execution
Team nomination
Independence check
What happens
- Formal engagement contract signed
- Verification team nominated and independence-checked
- Assurance level or methodology version confirmed in writing
What you provide
- Signed engagement agreement
- Any known conflicts of interest to declare
03
Planning
Stage 03Audit planning is tailored to the specific standard, project type, and risk profile — a first-time verification of a small project gets a different plan than a repeat verification of a large, established one.
This stage sets the sampling approach and the specific evidence we'll need to see, so the client knows exactly what to prepare before the execution stage begins, rather than discovering gaps mid-review.
Typically involves
Audit plan
Sampling approach
Evidence checklist
What happens
- Risk-based audit plan drafted
- Sampling approach set for the project type
- Evidence checklist shared with the client
What you provide
- Access to relevant documentation and data systems
- Nominated point of contact for the engagement
04
Validation / verification execution
Stage 04This is where most of the technical assessment happens — a review of project or inventory documentation, combined with a site visit or remote audit as appropriate to the project type and geography.
The team checks the evidence against the methodology's specific requirements, not a generic checklist — additionality, baseline accuracy, boundary setting, and data quality are all assessed against what the applicable standard actually requires for this project type.
Typically involves
Document review
Site visit / remote audit
Technical compliance check
What happens
- Full documentation and evidence review
- Site visit or remote audit, as appropriate
- Methodology compliance assessment
What you provide
- Requested evidence per the pre-shared checklist
- Site access or remote audit cooperation
05
Review process
Stage 05Before any opinion goes out, an internal reviewer who was not part of the engagement team checks the work independently. This exists specifically so that no single auditor's judgment is the only safeguard on the final opinion.
This step is where inconsistencies, incomplete evidence, or methodology misapplication get caught — before they become part of a formal, published opinion rather than after.
Typically involves
Independent technical review
Quality control sign-off
What happens
- Independent internal review of the engagement file
- Quality control sign-off before issuance
What you provide
- Responses to any follow-up queries raised in review
06
Decision & issuance
Stage 06The validation or verification opinion is issued once the independent review step is complete — never before. The opinion states clearly what was assessed, against which standard, and at what assurance level.
Where a credit or certified unit results from this stage, it's tagged at issuance as either destined for trading or retained for the client's own reporting — never both, to avoid the kind of double-counting that undermines trust in a market.
Typically involves
Opinion drafted
Final quality check
Opinion issued
What happens
- Formal opinion drafted and finalized
- Final quality check against the engagement file
- Opinion issued to the client and, where applicable, the registry
What you provide
- Nothing further — this stage is ours to complete
07
Post-issuance monitoring
Stage 07An opinion isn't the end of the process. If facts material to the opinion come to light after issuance — a data error, a change in project circumstances, a dispute raised by a third party — we track it and, where it's material, act on it.
This is what separates a one-time audit from ongoing verification infrastructure: the record stays open to correction, rather than being closed the moment the opinion is signed.
Typically involves
Ongoing monitoring
Material fact tracking
Re-assessment if needed
What happens
- Continuous monitoring for facts material to the opinion
- Formal tracking of any issues raised post-issuance
- Re-assessment if material facts are confirmed
What you provide
- Notice of any material change to the verified project or claim
Core capabilities
What the platform actually does
Purpose-built for validation and verification work, not a generic document-management tool repurposed for audits.
Workflow management
Manage the full engagement cycle — from contracting through execution — in one place, aligned to each discipline's process.
Secure data handling
A centralized, access-controlled repository built to protect sensitive project and client information.
Collaboration & access control
Multi-user access with permission controls, so developers, auditors, and reviewers see exactly what they need to.
Real-time status
Live status updates keep both sides aligned on where an engagement actually stands, without a status-check email.
Operational analytics
Visibility into engagement timelines and bottlenecks, to support better resourcing decisions on both sides.
AI & DMRV-ready
Built to take advantage of continuous, automated evidence collection as digital MRV capability expands across disciplines.
Integration
Built to connect, not to sit apart
The platform is designed to sync with the systems and registries our clients already use, rather than becoming one more disconnected tool.
Registries
- Direct sync with accredited registries to reduce duplicate data entry
- Structured evidence handover aligned to each registry's requirements
Client systems
- Connects to project data systems such as monitoring or revenue-grade meters
- API access for technology-enabled clients who want programmatic integration
Want to see the platform in action?
We can walk you through a live engagement on the platform before you commit to one.
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